Fan-blower heating apparatus.



Patented Sept. 5, I899.

w. E. ALLINGTDN. v FAN BLOWER HEATING APPARATUS.

(Application filed Apr. 29, 1899.) (N0 ModeL) 4 Sheets-Sheet l.

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(No Model.)

OOOOO 00000 W. E. ALLINGTUN.

FAN BLOWER HEATING APPARATUS.

(Application filed Apr. 29, 1899.)

Patented Sept. 5, I899.

4 Sheets-Sheet 2 -oo0o0 m: "cams Perms 00.. mfmumoq wAsnmoTcn. n4 0 No. 632,507. Patented Sept. 5, 1899. W. E. ALLINGTON.

FAN BLOWER HEATING APPARATUS.

(Application fild Apr. 29, 1599.)

4 Sheets-Sheet 3 (No Model.)

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No. 632,507. Patented Sept. 5, I899. W. E. ALLINGTON.

FAN BLOWER HEATING APPARATUS.

(Application filed Apr. 29, 1899.) (No Model.) 4 Sheets-Sheet 4,

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UNITED STATES PATEN OFFICE.

XVILLIAM E. ALLINGTON, OF SAGINAVV, MICHIGAN.

FAN' B LOWER H EATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 632,507, dated September 5, 1899.

' Application filed April 29,1899. Serial No. 714,973. on model.)

T0 all whm'n, it nut concern.-

Be it known that LWILLIAM E.ALLINGTON, of Saginaw, East Side, in the county of Saginaw and State of Michigan, have invented certain new and useful Improvements in Fan- Blower Heating Apparatus, of which the following is a specification.

This invention relates to fan-blower heating apparatus, and has for its object to provide a construction combining high efficiency with compactness, whereby a heating apparatus is produced at a comparatively small cost of material and labor of construction, which will occupy comparatively'little space, and which will heat the air in a thorough manner and deliver the same at a high velocity under considerable pressure.

The particular construction of heater to which my present invention relates is one which is more particularly adapted to deliver the air-currents after being heated through pipes or fines to definite distant points as contradistinguished from a heater of the type set forth in Letters Patent No. 623, 3&8, granted to me April 18,1899,which set forth an apparatus more particularly adapted for heating large spaces by direct discharge of the heated air from the heater without the employment of pipes or conduits.

To the ends above specified my present invention consists in certain novel features, which I will now proceed to describe and will then particularly point out in the claims.

In the accompanying drawings, Figure 1 is an elevation, partly in section, of an apparatus embodying my invention. Fig. 2 is a plan section of the same, taken on the line 2 2 of Fig. 1. Fig. 3 is a View similar to Fig. 2, illustrating a modified arrangement of the manifold connections. Fig. 4 is an enlarged detail view of a portion of one of the manifolds, said portion being shown in plan and a portion of the casing being shown in plan section; and Fig. 5 is a vertical sectional view transversely of the heater.

In the said drawings, 10 indicates a fanwheel of any approved construction, which is mounted on a shaft 11, carried in suitable bearings 12 on a supporting-frame 13. R0- tary in otion may be imparted to the shaft and fan-wheel in any suitable manneras, for instance, by a belt passing around a pulley 14,

mounted on one end of said shaft. In connec tion with this fan-wheel I employ a heater which surrounds and incloses the same. Steam is supplied to this heater from a centrally-arranged header 15, located within the casing,near the bottom thereof. This header is preferably constructed in sections,as shown,

asare also the manifolds connected therewith, the several sections of the header being provided with terminal flanges 16 and con-' nected-by bolts 17, passing through suitable apertures in the flanges, or in any other suitable manner. By reason of this construction the header, and consequently the heater, may

be built up to any desired size or length each of the two manifolds, as clearlyindicated in Figs.2 and 3. This connection is elfected by means of a pipe 20, leading from the headersection to the section of the supply-manifold, while on the otherside the connection is effected by means of a connecting piece or bracket 21,extending from the section of the header to the section of the drip-manifold. For certain purposes and uses I prefer the arrangement of these parts shown in Fig. 2

of the drawings, wherein the pipes 20 are all arranged on one side of the apparatus, so that the steam enters all of the sections of one of the manifolds and the water of condensation-all of the sections of the other manifold. structions and purposes employ the arrangement shown in Fig. 3 of the drawings, wherein the pipes 20 are alternately located on opposite sides of the header, so that the steam is admitted to one half of the sections of each of the manifolds and the water of condensation or cooler steam is received in the other half of said sections. The several sections of the manifolds are separated to a slight extent, so that air-passages 22 are formed between said sections, and the sections are so located relatively to the casing hereinafter I ma 7 however for certain other conhaving plane faces adapted to abut squarely 3 againsteach other when the sections are assembled and other plane faces adapted to abut against the casing and adapt the sections to be secured thereto. Itis not, however, essential to my invention that the sections should abut against each other in the mannerjust described, and this feature may be dispensed'with. The several sections of each manifold are provided with suitable drips 25, and a base-frame 26 of angle-iron may be employed, upon which the ends of the manifolds rest and are supported. 7

The heater proper is completed by means of a plurality of pipes surrounding and inclosing the fan-wheel and comprising a series of vertical i es 27 extending u ward from.

the manifold 18, a corresponding series of vertical pipes 28, extending upward from the manifold 19, and a plurality of horizontal or substantially horizontal pipes 29, connecting the pipes 27 and 28 by means of connectingelbows 30. These pipes are threaded to screw into the manifolds and elbows and are thus readily and quickly assembled and connected.

Inclosing the entire fan-wheel and heater as thus constructed is a casing comprising an outer portion 31 and an inner portion 32. The outer portion 31-incloses the entire appa-' ratus on all sidesthat is to say, at the top, bottom, and all four vertical sidesexcept for the inlet and outlet openings hereinafter specified. In the particular construction shown the lower portion or bottom of this casing is formed by the floor of the building or other part or foundation upon which the apparatus rests. This outer casing is provided at each side at what is known as the eye of the fan with an air-inlet 33, although.

one of these inlets may be omitted, if deemed desirable or necessary.- There is also provided in the lower portion of one side of the outer portion 31 of the casing immediately adjacent to the manifold 18 an air-outlet 34, which may be connected with a suitable conduit or pipe, through which the air may be carried and distributed to any desired point or points. The inner portion 32 of the casing is closed at the top and on all four vertical sides, except at the lower portion of that side adjacent to the manifold 19, where an air-opening 35 in 'the lower portion thereof is provided. This inner casing 32 is, however, entirely open at the bottom, so that the air-chamber 36, which is inclosed within and defined by the inner casing 32, is in free communication at its lower portion with the entire lower part of the heater, including the spaces under the header, connecting-pipes 20, and manifolds.

Those side walls of the outer and inner casings 31 and 32 which lie at the ends of the fanshaft'll and at right angles thereto are identical, so that the air-inlet openings 33 estab-.'

lish a direct'communication between the outer air and the interior of the fan-chamber 36.

It will be noted that the fan is located nearer,

to that side of the air-chamber 36 which is provided with the opening 35 than to the op posite side and also nearer to the top of said chamber than to the bottom. Thisarrange ment provides a sufficient space within the air-chamber for the flow of the air as it leaves the fan on its way to the opening 35 and other outlets through which it escapes from the airchamber. It will also be noticed that the outer and inner casings form between them a flue or conduitpassing around andinclosing the fan and through which the heating pipes extend longitudinally, the arrangement being such as to provide a maximum of compactness, while at the same time the air in passing through said conduit flows lengthwise of the pipes and is thoroughly brought into, contact with their heated surfaces to a maximum extent in a minimum space.

The operation of the heater will be readily understood from the foregoing description and is as follows: Rotary motion imparted to the fan-wheel will force the air centrifugally outward from the chamber 36, the major portion of it passing through the opening 35 into and the sectional area of unobstructed passage-way in said conduit is so great'thatthe air is delivered therethrough at a high velocity and pressure. This is also aided by the fact that the arrangement of pipes is longitudinal or in the direction of flow of the aircurrents, so that this flow is not constantly bafifled or retarded by deflection, as is the case where the arrangement of the heating-pipes is transverse to the direction of flow of said air-currents. A portion of the air passes directly downward from the chamber 36, being brought into contact with the header 16 and pipes 20, and thence passes under and between the sections of both of the manifolds 18 and19. The provision of the spaces 22 between the sections of the manifold and of the space 23 between said sections and the casing permits the air to pass under and around the manifold-sections in such a way as to thoroughly come into contact with all portions thereof. One part of this air which passes downward through the lower portion of the heater subsequently passes directly through the spaces 22 and 23 of the manifold 18 and thence directly to the discharge-outlet 34. The amount of air thus escaping by a comparatively short passage to the outlet is determined by the area of the spaces 22 and 23 and is never great enough to prevent said air from being thoroughly heated to the desired degree by reason of its contact with the pipes 20 and the sections of the manifold.

The other portion of this down wardl y-moving air passes in a similar manner under and around the sections of the manifold 19 and thence into the conduit or passage between the two portions of the casing. This additional air-supply is amply accommodated in said passage or conduit, since the area of the free space therein is greater than the area of the free or unobstructed space of the opening 35. The air thus delivered from the fan-chamber is brought into intimate and extended contact with the various heated surfaces of the heater proper and delivered at the outlet or discharge opening 34 at the desired temperature and at an efficient pressure, which will cause it to reach its destination in a comparatively small time owing to its high speed, thus delivering it with a comparatively small loss of temperature in transit. I

The arrangement of the parts is compact, so that only a comparatively small space is occupied by the entire apparatus, and as the heating-surfaces are all efficiently employed in useful work a comparatively small heater proper gives the desired result and permits of economy in material, and consequently a reduced cost of production.- The apparatus is, moreover, readily and quickly assembled, so that the cost of labor is also comparatively small, and in the particular form shown the apparatus is also adapted for facility in increasing or decreasing its size by the addition or removal of sections thereof.

It is obvious that modifications in the particular construction shown maybe made without departing from the principle of my invention, and I therefore do not wish to be understood as limiting myself strictly to the precise details hereinbefore described and shown in the drawings.

I claim- 1. In a fan-blower heating apparatus, a heater proper comprising manifolds, pipes extending vertically therefrom, and horizontal pipes connecting said vertical pipes, in combination with a casing inclosing said heater and comprising an outer portion inclosing the entire apparatus on all sides, and an inner portion having vertical end walls and a horizontal top wall, whereby there is formed a conduit inclosing said heater and conforming to the arrangement of the pipes, said casing having an air-inlet opening at one end of the conduit and an air-outlet opening at the other end thereof, and a fan communicating with said conduit for inducing an air-current therethrough, substantially as described.

2. In a fan-blower heating apparatus, a heater proper comprising manifolds, pipes extending vertically therefrom, and horizontal pipes connecting said vertical pipes, in combination with a casing comprising an outer portion inclosing the entire apparatus on all sides, and an inner portion having vertical end walls and a horizontal top Wall, whereby there is formed a conduit inclosing the pipes and conforming to their arrangement and a cenher and an outlet-opening at its other end to the outer air, a fan-wheel located in said fanchamber, a heater comprising manifolds and vertical and horizontal pipes extending longitudinally of the conduit and connecting the manifolds, and a steam-header cent-rally located near the bottom of the fan-chamber and suitably connected with the manifolds, substantially as described.

4. In a fan-blower heating apparatus, a heater proper comprising manifolds arranged to form air-passages and vertical and horizontal pipes connecting said manifolds, in combination with a casing having an outer portion inclosing said heater, and an inner portion forming a fan-chamber located Within the heater-pipes, said outer casing having a space in its lower portion extending below the manifolds and said fan-chamber comm unicating with said space, a conduit formed between the inner and outer portions of the casing and inclosing the pipes, said conduit having an air-inlet opening at one end and an air-outlet opening at the other, and a fanwheel located in said fan-chamber, substantially as described. 7

5. In a fan-blower heating apparatus, a casing comprising an inner and an outer portion whereby a central fan-chamber is formed, and a conduit surrounding the same and having an inlet-opening into the fan-chamber and an outlet-opening at its other end to the outer air, a fan-wheel located in said fanchamber, and a heater comprising manifolds having air-passages and vertical and hori= zontal pipes extending longitudinally of the conduit and connecting the manifolds, the fan-chamber extending under the manifolds, and a steam-header centrally located near the bottom of the fan-chamber and suitably connected with the manifolds, substantially as described.

6. In a fan-blower heating apparatus of the character described, the combination, with the central fan-chamber and conduit surrounding the same, of the heater having manifolds with air-passages between the same, the fan-chamber extendingunder said manifolds, and a fan-wheel located in the fan-chamber, substantially as described.

7. In a fan-blower heating apparatus, the combination, with an outer and inner casing forming a conduit and an inclosed fan-chamconnecting the manifolds, and a steam sup ply header centrally located in the lowerportion of the fan-chamber and Suitably connected with the manifolds, substantially as described.

XVILLIAM E. ALLINGTON. NVitnesses:

FREDERICK G. GOODWIN,

IRVINE MILLER. 

